For optimizing the performance of RESTful APIs in Spring Boot, developers can enable _____ to compress the HTTP response.
- CORS
- GZIP
- OAuth2
- SSL
To optimize the performance of RESTful APIs in Spring Boot, developers can enable GZIP compression for the HTTP response. Enabling GZIP compression reduces the amount of data sent over the network by compressing the response before sending it to the client. This reduces the bandwidth usage and speeds up API response times, especially when dealing with large payloads. Enabling GZIP compression is a common technique for improving the performance of web applications, including RESTful APIs.
In a Spring Cloud environment, to configure a service to discover its peers using Eureka, the property ____ must be defined in the application's properties or YAML file.
- eureka.application.instance-id
- eureka.client.register-with-eureka
- eureka.client.service-url
- eureka.service.discovery
In a Spring Cloud environment, to configure a service to discover its peers using Eureka, the property eureka.client.register-with-eureka must be defined in the application's properties or YAML file. This property determines whether the service should register itself with the Eureka server. Setting it to true allows the service to register, and it will be discoverable by other services through Eureka.
In Spring Boot, which framework is primarily used for mocking objects in unit tests?
- EasyMock
- JUnit
- Mockito
- TestNG
Mockito is a popular framework used for mocking objects in unit tests in Spring Boot applications. It allows you to create mock objects and define their behavior during testing.
In unit testing of Spring Boot applications, the _____ method of Assert class is commonly used to check if the specified condition is true.
- assertEquals
- assertFalse
- assertNull
- assertTrue
In unit testing of Spring Boot applications, the assertTrue method of the Assert class is commonly used to check if the specified condition is true. This is helpful for verifying that a certain condition or assertion holds true during the test.
Which Spring Cloud component is primarily used for service discovery in a microservices architecture?
- Spring Boot
- Spring Data
- Eureka
- Hibernate
The primary Spring Cloud component used for service discovery in a microservices architecture is Eureka. Eureka is a server-based service registry that allows microservices to register themselves and discover other services in the system.
The _____ plugin in a Spring Boot project's build file allows creating an executable JAR or WAR file.
- boot-executable
- executable-jar
- spring-boot-maven-plugin
- spring-war
In a Spring Boot project, you use the spring-boot-maven-plugin to create an executable JAR or WAR file. This plugin provides features like packaging your application with all its dependencies and specifying the main class to run when the JAR is executed. It simplifies the process of creating self-contained, executable Spring Boot applications.
How would you implement a custom error response structure when an exception occurs in a Spring Boot application?
- By modifying the default Spring Boot error page.
- By overriding the handleException method in a custom exception handler class.
- By configuring a custom ErrorAttributes bean to control the error response structure.
- By using the @ControllerAdvice annotation without customization.
To implement a custom error response structure in Spring Boot when an exception occurs, you can configure a custom ErrorAttributes bean. This bean allows you to control the error response structure. The other options don't provide a direct mechanism for customizing the error response structure.
In Spring Boot, when testing service layer components, the _____ annotation can be used to avoid loading the complete ApplicationContext.
- @DataJpaTest
- @MockBean
- @ServiceTest
- @SpringBootTest
When testing service layer components in Spring Boot, you can use the @MockBean annotation to mock dependencies and avoid loading the complete ApplicationContext. This helps in isolating the unit under test.
What is the purpose of password encoding in Spring Security?
- To enhance user experience
- To obfuscate the password
- To prevent password exposure
- To validate user credentials
The purpose of password encoding in Spring Security is to prevent password exposure. Storing passwords in plaintext is a security risk, so Spring Security encourages password encoding (hashing) to store passwords securely. This way, even if the password database is compromised, attackers cannot easily retrieve the original passwords. Password encoding is not meant to obfuscate passwords but to securely store them and prevent unauthorized access to plaintext passwords.
Which of the following is a true statement about transaction management in Spring Data JPA?
- Spring Data JPA automatically manages transactions when using the @Repository annotation.
- Transaction management is not supported in Spring Data JPA.
- Developers need to manually configure transactions for Spring Data JPA repositories.
- Spring Data JPA only supports read-only transactions.
Transaction management in Spring Data JPA requires manual configuration. Spring Data JPA doesn't automatically manage transactions. Developers typically use the @Transactional annotation or XML-based configuration to specify transaction boundaries for methods in their repositories. The other options are not accurate; Spring Data JPA can handle both read and write transactions, and it does not require manual configuration for all repositories.